Giraffe.
Three. One to do it, one to complain that it has already been done before, and one to repost this joke.
Two. One to hold it in the socket and the other to drink until the room starts spinning!
One. Vegans have the same capability of changing a lightbulb as non-vegans.
None. Its already lit, fam.
Nothing, giraffes aren't real.
Second Kangaroo: A giraffic jam.